Mister Exam

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How to use it?
2xy+2y^2-20y-6x+42; x^2+4xy-20x+8y
x+y=500; 1,3x+1,2y=630
x+y-z-u+v=1; x-y+z+u-2v=0; 3x+3y-3z-3u+4v=2; 4x+5y-5z-5u+7v=3
x+y=110; x+z=160; z+v=140; y+v=90
Integral of d{x}:
x+y+z
Expression:
x+y+z
Canonical form:
x+y+z
Identical expressions
x+y+z= thirteen ; x^ two +y^+z^ two = ninety-one ; y^ two =xz
x plus y plus z equally 13; x squared plus y to the power of plus z squared equally 91; y squared equally xz
x plus y plus z equally thirteen ; x to the power of two plus y to the power of plus z to the power of two equally ninety minus one ; y to the power of two equally xz
x+y+z=13; x2+y+z2=91; y2=xz
x+y+z=13; x²+y^+z²=91; y²=xz
x+y+z=13; x to the power of 2+y to the power of +z to the power of 2=91; y to the power of 2=xz
Similar expressions
x-y+z=13; x^2+y^+z^2=91; y^2=xz
x+y+z=13; x^2+y^-z^2=91; y^2=xz
x+y+z=13; x^2-y^+z^2=91; y^2=xz
x+y-z=13; x^2+y^+z^2=91; y^2=xz

x+y+z=13; x^2+y^+z^2=91; y^2=xz

You have entered [src]

x + y + z = 13

$$z + \left(x + y\right) = 13$$

      / 2\     
 2    \z /     
x  + y     = 91

$$x^{2} + y^{z^{2}} = 91$$

 2      
y  = x*z

$$y^{2} = x z$$

y^2 = x*z

Numerical answer [src]

x1 = 9.437662555029301 + 3.058274343204179e-40*i
y1 = 2.756963485480737 - 1.000204804881125e-40*i
z1 = 0.8053739594899617 - 2.058071289946135e-40*i

x2 = 7.791775541974939
y2 = 3.571324391077103
z2 = 1.636900066947958

x3 = 9.437662555029301 - 9.413169674201783e-22*i
y3 = 2.756963485480737 + 3.151882530107654e-22*i
z3 = 0.8053739594899617 + 6.261287144094132e-22*i

x4 = 0.0897504715768168
y4 = 1.032489498244325
z4 = 11.87776003017886

x5 = 9.437662555029373 - 6.20398247580246e-14*i
y5 = 2.756963485480714 + 2.037028165845866e-14*i
z5 = 0.8053739594899125 + 4.166954309956594e-14*i

x6 = 9.437662555029301
y6 = 2.756963485480737
z6 = 0.8053739594899617

x6 = 9.437662555029301
y6 = 2.756963485480737
z6 = 0.8053739594899617